Crossref journal-article
American Society for Cell Biology (ASCB)
Molecular Biology of the Cell (1076)
Abstract

Actin polymerization is accompanied by the formation of protein complexes that link extracellular signals to sites of actin assembly such as membrane ruffles and focal adhesions. One candidate recently implicated in these processes is the LIM domain protein zyxin, which can bind both Ena/vasodilator-stimulated phosphoprotein (VASP) proteins and the actin filament cross-linking protein α-actinin. To characterize the localization and dynamics of zyxin in detail, we generated both monoclonal antibodies and a green fluorescent protein (GFP)-fusion construct. The antibodies colocalized with ectopically expressed GFP-VASP at focal adhesions and along stress fibers, but failed to label lamellipodial and filopodial tips, which also recruit Ena/VASP proteins. Likewise, neither microinjected, fluorescently labeled zyxin antibodies nor ectopically expressed GFP-zyxin were recruited to these latter sites in live cells, whereas both probes incorporated into focal adhesions and stress fibers. Comparing the dynamics of zyxin with that of the focal adhesion protein vinculin revealed that both proteins incorporated simultaneously into newly formed adhesions. However, during spontaneous or induced focal adhesion disassembly, zyxin delocalization preceded that of either vinculin or paxillin. Together, these data identify zyxin as an early target for signals leading to adhesion disassembly, but exclude its role in recruiting Ena/VASP proteins to the tips of lamellipodia and filopodia.

Bibliography

Rottner, K., Krause, M., Gimona, M., Small, J. V., & Wehland, J. (2001). Zyxin Is not Colocalized with Vasodilator-stimulated Phosphoprotein (VASP) at Lamellipodial Tips and Exhibits Different Dynamics to Vinculin, Paxillin, and VASP in Focal Adhesions. Molecular Biology of the Cell, 12(10), 3103–3113.

Authors 5
  1. Klemens Rottner (first)
  2. Matthias Krause (additional)
  3. Mario Gimona (additional)
  4. J. Victor Small (additional)
  5. Jürgen Wehland (additional)
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Dates
Type When
Created 12 years, 2 months ago (July 2, 2013, 8:03 p.m.)
Deposited 3 years, 6 months ago (Feb. 26, 2022, 9:43 p.m.)
Indexed 4 months, 2 weeks ago (April 22, 2025, 4:11 a.m.)
Issued 23 years, 11 months ago (Oct. 1, 2001)
Published 23 years, 11 months ago (Oct. 1, 2001)
Published Print 23 years, 11 months ago (Oct. 1, 2001)
Funders 0

None

@article{Rottner_2001, title={Zyxin Is not Colocalized with Vasodilator-stimulated Phosphoprotein (VASP) at Lamellipodial Tips and Exhibits Different Dynamics to Vinculin, Paxillin, and VASP in Focal Adhesions}, volume={12}, ISSN={1939-4586}, url={http://dx.doi.org/10.1091/mbc.12.10.3103}, DOI={10.1091/mbc.12.10.3103}, number={10}, journal={Molecular Biology of the Cell}, publisher={American Society for Cell Biology (ASCB)}, author={Rottner, Klemens and Krause, Matthias and Gimona, Mario and Small, J. Victor and Wehland, Jürgen}, editor={Beckerle, Mary C.}, year={2001}, month=oct, pages={3103–3113} }